. Bulletin of the Natural History Museum Zoology. Fig. 118 Yoldiella sp. Lateral views of two shells taken from Sta. 119, Angola Basin. (Scale = mm). 40-46% of total length, sculpture regular with conspicuous ridges, periostracum straw coloured, often discoloured and brown at valve margins; umbo relatively large, posterior in position and inflated, directed posteriorly; proximal dorsal margins slightly convex either side of umbo, proximally evenly curved to rounded anterior and posterior margins, ventral margin long, smooth curve; hinge plate moderately. Fig. 119 Yoldiella fabula. Lateral
. Bulletin of the Natural History Museum Zoology. Fig. 118 Yoldiella sp. Lateral views of two shells taken from Sta. 119, Angola Basin. (Scale = mm). 40-46% of total length, sculpture regular with conspicuous ridges, periostracum straw coloured, often discoloured and brown at valve margins; umbo relatively large, posterior in position and inflated, directed posteriorly; proximal dorsal margins slightly convex either side of umbo, proximally evenly curved to rounded anterior and posterior margins, ventral margin long, smooth curve; hinge plate moderately. Fig. 119 Yoldiella fabula. Lateral views of two shells from the right and left sides respectively and a left valve to show details of the hinge-plate, a, Jeffreys collection USNM No. 199590 labelled Leda sericea Jeffr. St. 21, 1476 fm. Ireland, Pore. Ex. 1870; b, USNM No. 199589 labelled Leda sericea Jeff. St. 19a, 1366 fm, W. of Ireland, Pore. Ex. 1869; c, USNM No. 697343 labelled Yoldiella expansa Jeffreys 49°37'N, 13°34'W. of Ireland. (Scale = mm).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Museum (London). Andover : Intercept
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Keywords: ., bhlconsortium, bookcentury1900, bookcollectionbiodiversity, bookl
